C struct sample

malloc struct
typedef struct XmlNode
{
    int subNodeSize;
    int nodeIndex;

} ;

XmlNode *rootNode = (XmlNode*)malloc(sizeof(XmlNode));

memset(rootNode , 0, sizeof(rootNode ));

from https://openhome.cc/Gossip/CGossip/StructABC.html

#include <stdio.h>
#include <string.h>

struct Ball {
    char color[10];
    double radius;
};

int main(void) {
    struct Ball ball1 = {"red", 5.0};

    struct Ball ball2;
    strcpy(ball2.color, "green");
    ball2.radius = 10.0;

    printf("ball1: %s,\t%.2f\n", ball1.color, ball1.radius);
    printf("ball2: %s,\t%.2f\n", ball2.color, ball2.radius);

    return 0;
}